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Title: Mini ion trap mass spectrometer

An ion trap which operates in the regime between research ion traps which can detect ions with a mass resolution of better than 1:10.sup.9 and commercial mass spectrometers requiring 10.sup.4 ions with resolutions of a few hundred. The power consumption is kept to a minimum by the use of permanent magnets and a novel electron gun design. By Fourier analyzing the ion cyclotron resonance signals induced in the trap electrodes, a complete mass spectra in a single combined structure can be detected. An attribute of the ion trap mass spectrometer is that overall system size is drastically reduced due to combining a unique electron source and mass analyzer/detector in a single device. This enables portable low power mass spectrometers for the detection of environmental pollutants or illicit substances, as well as sensors for on board diagnostics to monitor engine performance or for active feedback in any process involving exhausting waste products.
Inventors:
 [1];  [2]
  1. (Livermore, CA)
  2. (Valley Springs, CA)
Issue Date:
OSTI Identifier:
870073
Assignee:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5451781
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
mini; trap; mass; spectrometer; operates; regime; traps; detect; resolution; 10; commercial; spectrometers; requiring; resolutions; hundred; power; consumption; kept; minimum; permanent; magnets; novel; electron; gun; design; fourier; analyzing; cyclotron; resonance; signals; induced; electrodes; complete; spectra; single; combined; structure; detected; attribute; overall; size; drastically; reduced; due; combining; unique; source; analyzer; detector; device; enables; portable; detection; environmental; pollutants; illicit; substances; sensors; board; diagnostics; monitor; engine; performance; active; feedback; process; involving; exhausting; waste; products; active feedback; waste product; single device; electron source; mass spectrometers; power consumption; mass spectrometer; permanent magnet; permanent magnets; electron gun; cyclotron resonance; trap mass; process involving; mass analyzer; waste products; resonance signals; signals induced; single combined; mass resolution; spectrometers requiring; novel electron; commercial mass; environmental pollutants; environmental pollutant; /250/